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Finding the Fourth Proportional to 513.41, 770.58 and 239.66

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Solution

The fourth proportional to 513.41, 770.58 and 239.66 is: 359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.41 : 770.58 = 239.66 : x
  2. Step 2: Convert to fraction form
    513.41/770.58 = 239.66/x
  3. Step 3: Cross multiply
    513.41x = 770.58 × 239.66
  4. Step 4: Simplify right side
    513.41x = 184,677.20
  5. Step 5: Solve for x
    x = 184,677.20/513.41
  6. Step 6: Final answer
    x = 359.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.